allow repeats=None error

python/cudf/cudf/core/column/string.py

@@ -791,18 +791,12 @@ def repeat(self, repeats: Union[int, Sequence],) -> SeriesOrIndex:
         2    ccc
         dtype: object
         """
-        none_flag = False
-        if repeats is None:
-            none_flag = True
-            repeats = [None] * len(self._column)
-
         if can_convert_to_column(repeats):
-            result = self._return_or_inplace(
+            return self._return_or_inplace(
                 libstrings.repeat_sequence(
                     self._column, column.as_column(repeats, dtype="int"),
                 ),
             )
-            return result.astype("float64") if none_flag else result
 
         return self._return_or_inplace(
             libstrings.repeat_scalar(self._column, repeats)

python/cudf/cudf/tests/test_string.py

@@ -861,7 +861,6 @@ def test_string_contains(ps_gs, pat, regex, flags, flags_raise, na, na_raise):
         2,
         0,
         -3,
-        None,
         [5, 4, 3, 2, 6],
         [5, None, 3, 2, 6],
         [0, 0, 0, 0, 0],